Kingdom Fungi R.T.Moore (1980) - fungi Phylum Glomeromycota C. Walker & A. Schüssler (2001) - arbuscular mycorrhizal fungi Class Glomeromycetes Caval.-Sm. (1998) Order Archaeosporales C. Walker & A. Schüßler (2001) Genus Geosiphon F. Wettst. (1915)